I wanted something to hang in the bathroom next to my home gym and obviously couldn't hang a real 45 pound Olympic plate from the wall so I created this model.  It was modeled to scale off of one of my own Olympic plates.  You will need to print 4 of the pins which will go between each of the 4 quadrants when you glue them together.  The pins just help keep everything aligned while gluing.  You will also need to print 4 of the triangular ribs which will be glued on top of the seams at the intersection of each quadrant.  I modeled some shallow recesses to help seat those while gluing.  Finally, you will need 1 of the center hubs.  This will be glued right in the center.  It also has a shallow recess that it will seat in while gluing.  When I printed mine, I printed it with 2 walls and 20% infill with gyroid infill and it took just shy of 1kg of filament.